A parliamentary committee has proposed that the selection process for political ambassadorial appointments should be subject to a veto by Members of Parliament (MPs). This recommendation follows severe criticisms regarding Peter Mandelson’s tenure as the United Kingdom’s ambassador to Washington.
The Foreign Affairs Select Committee characterized Mandelson’s appointment as “disastrous,” asserting that it had a “highly damaging” impact on the British government and was “painful and offensive to the victims of Jeffrey Epstein.”
Keir Starmer’s decision to appoint Mandelson, a long-time Labour party figure, to this prominent position faced increasing scrutiny starting in September 2025, particularly after Mandelson was dismissed following the disclosure of email exchanges with Epstein by the US Department of Justice. Typically, ambassadors are appointed from a pool of experienced career diplomats within the UK’s civil service.
The cross-party committee, which monitors the activities of the Foreign Office, expressed frustration at being denied the chance to interrogate Mandelson prior to his appointment or his arrival in Washington. In light of the problematic nature of his appointment, the committee has argued that all political appointees should be required to appear before them for questioning and be subject to a veto.
Emily Thornberry, the Labour MP who chairs the committee, indicated that the initial inquiries made after Mandelson’s withdrawal from Washington yielded “partial truths” rather than comprehensive answers from the government. However, in April 2026, the committee received further testimony over several days from key officials involved in Mandelson’s appointment.
This testimony followed revelations from the Guardian that the Foreign Office had disregarded the advice of the UK’s security vetting agency, which had determined in late January 2025 that Mandelson should not receive the necessary high-level security clearance for most roles in the department. Concerns raised by the vetting agency included Mandelson’s connections to prominent figures in China, Russia, and Israel, along with a £1 million loan.
Despite these findings, Mandelson was announced as the new ambassador to the United States prior to the senior civil servants in the Foreign Office reviewing the vetting agency’s conclusions. The appointment had received approval from both the US government and King Charles.
The committee has suggested that announcements regarding public appointments should only occur after security clearances have been obtained.
Although Starmer’s government released hundreds of pages of documents related to Mandelson’s appointment, the committee still identified numerous “unanswered questions.”
The committee criticized the “appalling” record-keeping practices of the Foreign Office and Downing Street, which left MPs uncertain about the existence or status of documents that should detail the key decisions regarding Mandelson’s appointment. Some materials may have been transferred to the Metropolitan police, which is withholding relevant documents due to ongoing investigations.
Among the existing documents is considerable correspondence between senior officials surrounding the time Mandelson’s appointment was announced by the Prime Minister in December 2024. Officials were discussing whether Mandelson required security vetting, given his positions in the House of Lords and the Privy Council, an advisory group to the monarch with a long-standing history.
The committee expressed that it was “extraordinary” that more focus appeared to be placed on whether Mandelson needed vetting rather than on whether the vetting process would reveal issues that should have precluded his appointment altogether.
Starmer has apologized for his choice to appoint Mandelson and is facing additional backlash for dismissing Olly Robbins, the head of the Foreign Office. Robbins was a key civil servant who granted Mandelson security clearance despite what he described as a “borderline” decision from the vetting officials; however, there has been no published evidence to support this characterization or the mitigative measures taken.
Starmer stated that he lost trust in Robbins due to the latter’s failure to inform him that Mandelson had not passed the vetting process. The committee noted that Robbins believed he was fulfilling the desired outcome and suggested that his dismissal may not have followed proper procedures or been based on established facts.
Interestingly, Robbins might still find favor, as there are indications that Starmer’s potential successor, Andy Burnham, may consider reappointing him as the national security adviser as Starmer prepares to exit Downing Street.
